Flushing-valve device.



R. W. KILLIN.

FLUSHING VALVE DEVICE.

APPLICATION FILED MAY 24, 1910.

Patented Oct. 10, 1911,

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RALPH W. KILLIN, OF MEMPI-IIS, TENNESSEE.

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Specification ofgLetters Patent.

Patented Get. 10, 1911.

Application filed May 24,1910. Serial No. 563,165.

To all whom it may concern:

Be it known that I, RALPH W. KILLIN, a citizen of the United States ofAmerica, residing at Memphis, in the county of Shelby and State ofTennessee, have invented certain new and useful Improvements inFlushing-Valve Devices, of which the following i is a specification,reference being had therein to the accompanying drawing.

This invention relates to flushing devices for flushing the bowls ofwater closets, and has especial reference to that class of flushingvalve devices so constructed and arranged that the flushing valve whenopened will remain open for an interval of time until the desired amountof water has been discharged into the bowl of the water closet, and thevalve will then be gradually closed.

The invention has for its object to pr0- vide an improved flushingdevice of the kind referred to, so constructed and arranged that theflushing valve, after having been opened, will remain open for aninterval of time, and will be gradually closed.

Referring to the accompanying drawings: Figure 1 is a view inlongitudinal section of a flushing valve device constructed inaccordance with this invention. Fig. 2 is a transverse section of theoil chamber. Fig. 3 is an enlarged detail view in vertical section andpartly broken away of a portion of the oil chamber and the pistontherein.

1 indicates a flushing valve chamber of any wellknown type, and as hereshown, containing two flushing valves 2, mounted on a valve stem 3, thewater supply being had through the pipe 4, connected to one end of valvechamber 1, water being discharged to the water closet bowl through thepipe 5, connected to one end of valve chamber 1, the other end of thepipe 5 being connected with the water closet bowl. The valve stem 3projects through a st-ufling box 3, and into a hollow chamber 6, in theenlarged head 7, of the piston rod 8, the valve stem 3 extending througha removable head 9, screwed int-o the open end of the chamber 6. On theend of the valve stem 3 which projects partly into the chamber 6, issecured a nut 10, and a second nut 11 is secured on the valve stem 3,between the head 9 and the stufling box 3. The piston rod 8 projectsthrough a stuffing box 8', on one side of a casing 12, which serves asan oil chamber, and is secured to apiston 13, located and movable in theoil chamber 12 which may be mounted on any suitable support.

The oil chamber 12 has one of its walls formed with a passageway latvextending the length of the oil chamber and having its ends opening intosaid chamher 011 opposite sides of the piston 13. The flow of the oilthrough the passageway 11 is regulated by a screw valve 15, having itsinner end controlling the opening at one end of the passageway 11. Thepiston 13 is provided with a passageway 16, having a hinged cover 16 onone side thereof, so as to permit the passage of oil through saidpassage-way 16 in one direction of movement of the piston, butpreventing it from passing through said passage-way in the oppositedirection of the movement of the piston. The oil chamber 12 is furtherprovided in one of its walls with a short supplemental passageway orgroove 17 extending on each side of the piston 13 in its normalposition, as shown in Fig. 1, whereby a small quantity of oil may passfrom one side of the piston to the other in the initial movement of thepiston. The piston 13 and its piston rod 8 are operated by means of alever 18, pivoted to any suitable support, and having a forked end 19engaging a grooved collar 20, screwed onto the threaded head 7.Eneircling the piston rod 8 and a portion of the head 7 is a coil spring21, having one end bearing against one side of the casing 12 and itsother end bearing against the collar 22, screwed on the threaded head 7.

The flushing valve device is operated as follows: l/Vhen it is desiredto flush the bowl of a water-closet, the lever 18 is operated to moveback the piston rod 8, which carries the head 9 back against the nut 10,the valves 2 ren'iaining closed. As the piston rod 8 is further movedback by the lever 18, the head 9 bearing against the nut 10, pulls thestem 3 and opens the valve 2, the nut 10, with the end of the valve stem3 having been moved back to the dotted position shown in the chamber 6.In the entire backward movement of the piston rod 8, the piston 15.) ismoved back to the position shown in dotted lines in the casing 12. Asthe piston 13 is moved back, it presses 'ainst the body of oil withwhich the 3g chamber is filled, and the oil is forced through thepassage-way 16 into the space in the oil casing 12 in front of thepiston. As the piston rod 8 is moved back, the coil spring 21 iscompressed, and the tension of said spring causes a pressure to be madeupon the body of oil which has passedto piston 13, drawn by the pistonrod 8 to be slowly moved back to its normal position, being retarded bythe volume of oil in front of it, and since there is a lost motion,owing to the valve rod 3 remaining stationary with its end in thechamber 6 of the head 7,

the valves 2 are not immediately closed, but remain open till the head 9reaches the nut 11 on the shaft 3, when in the further movement of thepiston rod 8, the stem 3 is op T erated to automatically close thevalves 2 by the tension of spring 21.

It will be seen that in the outward movement of the piston 13, the oilon one side of the piston will not only pass through the passageway 14,but also the passageway 16,

the cover 16 permitting of the same, so that there will be littleresistance by the oil to the piston as the piston is moved outward, butin the opposite direction of movement of the piston it will be retardedby the oil in front of it. If desired, water may be used instead of oil,but oil is preferred.

It will be seen that by means of this invention an eflective device isprovided i whereby the flushing valve may be opened and remain open fora suitable length of time, until it is desired to close the same.

The groove 17 can be used to allow the piston free return and animmediate seating of the valves 2. The oil can freely flow from one sideof the piston to the other through this passage 17 as soon as the pistonreaches it, and the full force of the spring is centered upon theclosing of the valves 2. If it is desired to retard the movement of thevalve there need be no passage, or it may be ended at any desired point,as shown in Fig. 3. In the initial movement of the piston, the liquidnaturally passes through the valved passage 16 as it offers the leastresistance.

.By means of the construction of parts including the cylindrical pistonrod with the elongated screw threaded head having a threaded collaradjustable thereon, and

dash pot, a piston located in said cylinder, a

piston rod connected with said piston and projecting out of saidcylinder and having on its outer end an elongated head threaded on itsexterior, and provided with a closed chamber into which projects the endof the stem of the flushing valve, a stop on the end of said stem insaid closed chamber, and a stop on said stem on the outside of saidchamber, a screw-threaded collar mounted on and adjustable on saideloniii gated head, a coil spring encircling a portion of said head andthe piston rod projecting from the cylinder and having one end bearingagainst said cylinder and its other end bearing against said collar, ascrewthreaded grooved collar adjustably mounted on said elongated head,and an operating lever connected with the grooved collar.

2. In a device of the character described,

a flushing valve chamber provided with ports each having a valve seat, avalve stem projecting into said chamber and having valves seated on saidvalve seats respectively, said valve stem projecting out of saidchamber, collars at the outer end of said valve stem spaced apart fromeach other, a dash pot, a piston located in said dash pot, a piston rodconnected to sald piston and projecting out of said dash pot, a collaron D said piston rod, a spring interposed between said collar and thedash pot, said piston rod being connected to said valve stem and adaptedto alternately engage said collars on the. valve stem to reciprocate thesame,

there being a lost motion between said pis- 5i a ton rod and said valvestem, and means for reciprocating said piston rod and piston.

In testimony whereof I hereunto afliX my signature in presence of twowitnesses.

RALPH w. KILLIN.

lVitnesses:

WV. H. MoNoRmr, GEO. J. COLEMAN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

